Bump underscore and ovsx

Bumps [underscore](https://github.com/jashkenas/underscore) to 1.13.1 and updates ancestor dependency [ovsx](https://github.com/eclipse/openvsx/tree/HEAD/cli). These dependencies need to be updated together.


Updates `underscore` from 1.8.3 to 1.13.1
- [Release notes](https://github.com/jashkenas/underscore/releases)
- [Commits](jashkenas/underscore@1.8.3...1.13.1)

Updates `ovsx` from 0.1.0 to 0.5.2
- [Release notes](https://github.com/eclipse/openvsx/releases)
- [Changelog](https://github.com/eclipse/openvsx/blob/master/cli/CHANGELOG.md)
- [Commits](https://github.com/eclipse/openvsx/commits/HEAD/cli)

---
updated-dependencies:
- dependency-name: underscore
  dependency-type: indirect
- dependency-name: ovsx
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]